10th September 2020

A 49-year-old man presents to his GP with a 3-day history of fever

A 49-year-old man presents to his GP with a 3-day history of fever, dyspnoea and a purulent productive cough that has been worsening. He does not have any relevant past medical history and has never smoked. His basic observations are: T 38.1, Oxygen saturations 95%, RR 25, HR 95, BP 115/75. On examination, there is reduced air entry, reduced chest expansion and a dullness in the right lower base with associated crackles. The GP commences him on antibiotics for community-acquired pneumonia. 

What is the most likely causative organism for his condition?

Select the SINGLE most appropriate option from the list below. Select ONE option only.